This video appeared on my fb timeline this morning. It may be doing the rounds, so forgive me if you have seen it before; but it really is worth every second.

[video]https://www.youtube.com/watch?v=Ih1ZWE3pe9o[/video]

I bloody LOVE this stuff. 😀

Tick for later

Also a huge fan of this kind of stuff and books by the likes of Alex Bellos and Marcus du Sautoy.

You should check out the Numberphile channel on Youtube. Pron for number-nerds.*

*including me 🙂

Cheers. Knew the maths (being a computer geek) but didn’t know that the Egyptians used to do that too.

I also quite like Lattice Multiplication, which lets you multiply two really big numbers even though you only know your times tables up to 9.

[video]https://www.youtube.com/watch?v=gS6TfWUv97I[/video]

Tick.

🙂 loved that

This is great too

[video]http://youtu.be/CR_XL192wXw[/video]

Amazing! I understood almost nothing

Saw that chap with the plate on tour with a couple of others. Trying to remember what they were called.

If you’re not really a “maths” person, FFTs are quite confusing, but watch this vid, about a mechanical FFT device and suddenly, it becomes a lot easier to understand!

[video]http://www.youtube.com/watch?v=NAsM30MAHLg[/video]

😆

That’s ace. Who’d have thought a cold blooded assassin is also a maths genius.

Eulers Identity.

https://en.wikipedia.org/wiki/Euler’s_identity

End of thread.

BTW, that first video on binary maths and it’s application to computers misses one rather important fact! It says “no times tables are necessary) but then shows the requirement to double numbers, which you might think requires tables, but in fact it doesn’t!

Because in binary or Base2, each number in the series 1,2,4,8 etc is already twice as large as the preceding one, so if you have a binary number, you can double it by simply “shifting” it leftwards, and halve it by shifting it right (so called bit shifting, which is very quick for digital logic to do)

i.e. look at the following series, 20,10,5 in decimal, shown in (8bit)binary:

20 is 00010100
10 is 00001010
5 is 00000101

you can see the same pattern, just shifted right or left!

I love this stuff! Recreational maths 🙂

I love this stuff too. Did A-level maths but never pursued it beyond that. Anyone who’s interested should read the excellent “Fermat’s last theorem” by Simon Singh.

And / or his equally excellent book about the maths of the simpsons.

There’s a quote in one of those books that I can’t remember exactly, along the lines of: to glimpse this world is to understand that there is a magnificent beauty in this world that is only truly visible to a handful of the greatest mathematicians.

My head was fubared at 40 seconds. Thanks anyway.

This is not helping me write my essay…

Max torque that’s really neat. Not done the videos but have a geeky fascination with maths (the type with numbers not letters).

Cool stuff guys – mad for it! 😆

I’d be more impressed if you could tell me how I’ve never had the foggiest idea when it comes to numbers.
I haven’t a clue. Even basic stuff.
Any kids out there? Learn your maths. 🙂

Watched this movie last night, a must for the mathy ones amongst you …

http://www.rottentomatoes.com/m/the_man_who_knew_infinity

‘d be more impressed if you could tell me how I’ve never had the foggiest idea when it comes to numbers.

Have you ever been tested for dyscalculia?

Thanks, putting a marker down here

Noted for later.

Coincidentally, a mate just recommended this to me.

https://play.google.com/store/apps/details?id=example.matharithmetics

Not looked at it yet (or the videos) but thought I’d share as it sounded on topic.

Set the FFT machine vids to “Watch Later”

As well as the Numberphile channel mentioned earlier in the thread, several of the personal channels of those that feature in Numberphile are also worthy of subbing.

liked that

This is pretty good. Manages to explain things in a way that makes me think I’ve understood it until about 5 minutes after I’ve read it.
https://www.amazon.co.uk/Number-Devil-Mathematical-Adventure/dp/1847080537/ref=sr_1_1?ie=UTF8&qid=1461349596&sr=8-1&keywords=the+number+devil

Just watched the OP video. That’s brilliant.